Diagnostic Procedure

VEHICLE MOVES WHEN ACCELERATING FROM STANDSTILL ON SLOPE (SKYACTIV-G VIN Y) DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	INSPECT EFFECT OF NON-GENUINE ELECTRICAL ACCESSORY FOR CAUSE OF MALFUNCTION Remove any non-genuine electrical accessory. Verify the malfunction symptom. Does vehicle slip backwards on inclined road surface when accelerating after i-stop operates?	Yes	Go to the next step.
1		No	The system is normal. Explain to the customer that the vehicle slips backwards on an inclined road surface when accelerating after i-stop operates due to the effect of the non-genuine electrical accessory installed.
2	VERIFY DTC Perform the DTC inspection for the following modules. (See DTC INSPECTION .) PCM TCM DSC HU/Control Module SAS control module Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-G VIN Y)] .) (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [TCM (GW6AX-EL)] .) (See DTC TABLE [DSC HU/Control Module] .) (See DTC TABLE [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.)] .)
2		No	Go to the next step.
3	DETERMINE IF MALFUNCTION CAUSE IS HILL LAUNCH ASSIST FUNCTION OR ATX SYSTEM Verify the malfunction symptom on a flat road surface. Does the acceleration lag when accelerating?	Yes	Perform the symptom troubleshooting "ACCELERATION MALFUNCTION". (See ACCELERATION MALFUNCTION .)
3		No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW .) If the CAN communication is normal, repeat the inspection from Step 1. If the malfunction recurs, perform the following procedure. Replace the DSC HU/Control Module. (Brake fluid pressure sensor (built-into DSC HU/Control Module) or DSC HU/Control Module brake pressure hold function malfunction.) (See DSC HU/Control Module REMOVAL/INSTALLATION .) Perform the repair completion verification.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED Install/connect the part removed/disconnected during the troubleshooting procedure. Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting. (Explain contents of repair to customer)
Repair completion verification 1		No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW .) If the CAN communication is normal, perform the diagnosis from Step 1. If the malfunction recurs, go to the next step.
Repair completion verification 2	VERIFY IF MALFUNCTION IS CAUSED BY NOT PERFORMING PCM REPROGRAMMING Verify repair information and verify that there is a new calibration in the PCM. Is there a new calibration in the PCM?	Yes	Perform the PCM reprogramming and verify if the malfunction symptom was corrected. If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION .)
Repair completion verification 2		No	Replace the PCM. (See PCM REMOVAL/INSTALLATION .)